From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andy Lutomirski <luto@amacapital.net>,
Andrew Morton <akpm@linux-foundation.org>,
Denys Vlasenko <dvlasenk@redhat.com>,
Brian Gerst <brgerst@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
Oleg Nesterov <oleg@redhat.com>, Waiman Long <waiman.long@hp.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 06/11] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code
Date: Tue, 29 Sep 2015 10:44:22 +0200 [thread overview]
Message-ID: <20150929084422.GB332@gmail.com> (raw)
In-Reply-To: <CA+55aFw5BLBTFWQpcOGYv4ALAM02aywTk1vz5ng=wqPnNH3qKw@mail.gmail.com>
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Mon, Sep 21, 2015 at 11:23 PM, Ingo Molnar <mingo@kernel.org> wrote:
> > xen_mm_pin_all()/unpin_all() are used to implement full guest instance
> > suspend/restore. It's a stop-all method that needs to iterate through
> > all allocated pgds in the system to fix them up for Xen's use.
>
> And _this_ is why I'd reall ylike that "for_each_mm()" helper.
>
> Yeah, yeah, maybe it would require syntax like
>
> for_each_mm (tsk, mm) {
> ...
> } end_for_each_mm(mm);
>
> to do variable allocation things or cleanups (ie "end_for_each_mm()" might drop
> the task lock etc), but wouldn't that still be better than this complex
> boilerplate thing?
Yeah, agreed absolutely.
Thanks,
Ingo
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-09-29 8:44 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-22 6:23 [PATCH 00/11] x86/mm: Implement lockless pgd_alloc()/pgd_free() Ingo Molnar
2015-09-22 6:23 ` [PATCH 01/11] x86/mm/pat: Don't free PGD entries on memory unmap Ingo Molnar
2015-09-22 17:41 ` Linus Torvalds
2015-09-22 18:03 ` Andy Lutomirski
2015-09-22 6:23 ` [PATCH 02/11] x86/mm/hotplug: Remove pgd_list use from the memory hotplug code Ingo Molnar
2015-09-22 17:48 ` Linus Torvalds
2015-09-23 11:44 ` Oleg Nesterov
2015-09-29 8:42 ` Ingo Molnar
2015-09-29 16:51 ` Oleg Nesterov
2015-09-22 6:23 ` [PATCH 03/11] x86/mm/hotplug: Don't remove PGD entries in remove_pagetable() Ingo Molnar
2015-10-06 3:35 ` Kamezawa Hiroyuki
2016-02-12 19:04 ` Andy Lutomirski
2016-03-10 6:45 ` Andy Lutomirski
2016-03-10 9:56 ` Ingo Molnar
2016-03-11 1:52 ` Andy Lutomirski
2015-09-22 6:23 ` [PATCH 04/11] x86/mm/hotplug: Simplify sync_global_pgds() Ingo Molnar
2015-09-22 6:23 ` [PATCH 05/11] mm: Introduce arch_pgd_init_late() Ingo Molnar
2015-09-22 17:55 ` Linus Torvalds
2015-09-22 18:00 ` Andy Lutomirski
2015-09-22 18:26 ` Linus Torvalds
2015-09-22 18:37 ` Andy Lutomirski
2015-09-22 18:44 ` Linus Torvalds
2015-09-22 18:52 ` Andy Lutomirski
2015-09-22 6:23 ` [PATCH 06/11] x86/virt/guest/xen: Remove use of pgd_list from the Xen guest code Ingo Molnar
2015-09-22 17:58 ` Linus Torvalds
2015-09-29 8:44 ` Ingo Molnar [this message]
2015-09-22 6:23 ` [PATCH 07/11] x86/mm: Remove pgd_list use from vmalloc_sync_all() Ingo Molnar
2015-09-22 17:59 ` Linus Torvalds
2015-09-22 6:23 ` [PATCH 08/11] x86/mm/pat/32: Remove pgd_list use from the PAT code Ingo Molnar
2015-09-22 6:23 ` [PATCH 09/11] x86/mm: Make pgd_alloc()/pgd_free() lockless Ingo Molnar
2015-09-22 6:23 ` [PATCH 10/11] x86/mm: Remove pgd_list leftovers Ingo Molnar
2015-09-22 6:23 ` [PATCH 11/11] x86/mm: Simplify pgd_alloc() Ingo Molnar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150929084422.GB332@gmail.com \
--to=mingo@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=bp@alien8.de \
--cc=brgerst@gmail.com \
--cc=dvlasenk@redhat.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=luto@amacapital.net \
--cc=oleg@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=waiman.long@hp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).